Saw-grinding machine.



PATB NTED MAY 24; 1904.

J. ROSE.

'sAW GRINDING MACHINE. APPLIOATION FILED AUG. 8. 1903- 2 SHEETS-SHEET 1.

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No. 760,566. PATBNTED MAY 24, 1904-.

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, grinding machines, and has for its object to Patented May 24, 1904. I

PATENT OFFICE.

JOHN osa, or .KUSHEQUA, PENNSYLVANIA.

SAW-GRINDING MACHINE.

SPECIFICATION forming part of Letters Patent o. 760,566, dated May 24, 1904. Application filed August 6,19 3. SerialNo. 168,829. (Nomodeh) To all whom it may concern.-

county of McKean and State of Pennsylvania,

have invented anew and useful Saw-Grinding Machine, of which the following is a specifi cation. p

My invention is an improvement in sawprovide means for holding a circular crosscut or rip saw and grinding same to proper pitch or bevel.

My invention consists of the novel features of construction and combination of parts hereinafter described, particularly pointed out in the claims, and shown in the accompanying drawings, in Which Figure l is a side elevation of my device complete. Fig. 2 is a front elevation of same, the saw being shown in dotted outline and the saw-guide being shown in an oblique position in dotted outline. Fig. 3 is a top plan view. Fig. 4 is a transverse horizontal section on the line 4 4 of Fig. 2, showing the guide in one them by means of a bolt C.

position in full lines and in other positions in dotted lines.

Inthe drawings, A represents ametal standard having a circular base-plate A. A castiron out ring B fits slidably on the standard, and its edges are drawn together and the ring clamped to the stand by means of a nut and bolt, the bolt passing through the flanges B. The ring has extending from it on one side two parallel lugs 13 in vertical alinement and having their adjacent faces milled. A casting C .has an inwardly-extending portion fitting between the lugs B and pivotally connected to This construction is such that the casting C can be swung laterally with reference to the lugs and can also be adjusted vertically with reference to the standard A by moving the ring B. A bolt D is threaded into the center of the face of the casting O and at right angles to same. This bolt supports an elongated frame D of considerable length. This frame'is secured to and adjusted on the bolt D by suitable nuts. Theupper'portion of the frame Dis reduced in thickness, and along this reduced edge is bolted a rib D and on the front face of the rib D is arranged a guide-plate D the bolts securing the guide-plate to the rib. A flanged head D has its flanges fitting over and sliding on the guide-plate D The head D has lugs formed thereon, which have threaded perforations, and a rod D having an endless thread out thereon, is journaled in the bent ends of the guideplate and works in said perforations, moving the head D along the plate D A suitable handle is provided to rotate the rod D A bolt D is threaded into the face of the sliding head D and fitted on the outer end with collar and nuts and forming the arbor 'on which the saws are placed and held for grinding.

On the upper end of the standard is arranged a collar E, having two diverging arms extending from one side of said collar and curved upwardly. A grinder-head frame F hasits rear end extending between the free ends of the arms E, and a shaft G is journaled in bearing formed in the arms E and frame F. This shaft supports the driving-pulley G and the driven pulley G The front end of the grinder-head frame is supported by a leafspring H, interposed under the left-hand side and bearing on the top of the standard. The front end of the frame F is also provided with bearings for a shaft F, on which is a small driven pulley F and a grinding or emer .V

wheel F A belt F runs from the pulley Gr 'to F, and power is transmitted from any convenient source through a belt to pulley G When the sliding head is thrown into verticalposition, the saw will be conveniently held for pointing up by hand, and the adjustability of the machine permits the grinding of saws of various diameters. The machine herein described will bevel a crosscut-saw to a thirty-five. degree bevel and give thirty-five degrees pitch to a rip saw.

The ring B is splined to the standard A, as

shown at B or otherwise secured so that it will be guided in its vertical movement and will not deviate to either side during such movement. I

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A device of the kind described comprising a standard, a ring vertically adjustable on ring, a casting having a projection on its rear face pivoted between said lugs, a frame pivoted to the front face of said casting, a guideplate carried by said frame, a flanged, sliding head movable on said guide-plate, means carried by said head for holdinga saw, and means carried by the upper end of the standard for holding a rotatable grimling-wheel above said sliding head.

J Ol-lN ROSE. Witnesses:

MABnL SIMPSON, J ENNIE L. CODY. 

